import { 
  Controller, 
  Get, 
  Post, 
  Put, 
  Delete, 
  Body, 
  Param, 
  Query, 
  ParseIntPipe 
} from '@nestjs/common';
import { ApiTags, ApiOperation, ApiResponse, ApiParam, ApiBearerAuth } from '@nestjs/swagger';
import { Roles, CurrentUser } from '@app/auth';
import { 
  CreateAnnouncementDto, 
  UpdateAnnouncementDto, 
  QueryAnnouncementsDto, 
  BatchAnnouncementActionDto 
} from '../dto';

@ApiTags('公告管理')
@ApiBearerAuth()
@Controller('admin/announcements')
export class AnnouncementsController {
  constructor() {}

  @Get()
  @ApiOperation({ summary: '获取公告列表' })
  @ApiResponse({ status: 200, description: '返回公告列表' })
  @Roles('admin', 'editor')
  async findAll(@Query() query: QueryAnnouncementsDto) {
    // TODO: 实现公告查询逻辑
    return {
      code: 200,
      data: {
        announcements: [],
        pagination: {
          page: query.page,
          limit: query.limit,
          total: 0,
          totalPages: 0
        }
      },
      message: '获取成功'
    };
  }

  @Get(':id')
  @ApiOperation({ summary: '获取公告详情' })
  @ApiParam({ name: 'id', description: '公告ID' })
  @ApiResponse({ status: 200, description: '返回公告详情' })
  @Roles('admin', 'editor')
  async findOne(@Param('id', ParseIntPipe) id: number) {
    // TODO: 获取公告详情
    return {
      code: 200,
      data: null,
      message: '获取成功'
    };
  }

  @Post()
  @ApiOperation({ summary: '创建公告' })
  @ApiResponse({ status: 201, description: '公告创建成功' })
  @Roles('admin', 'editor')
  async create(@Body() createAnnouncementDto: CreateAnnouncementDto, @CurrentUser() user: any) {
    // TODO: 创建公告
    return {
      code: 201,
      data: null,
      message: '创建成功'
    };
  }

  @Put(':id')
  @ApiOperation({ summary: '更新公告' })
  @ApiParam({ name: 'id', description: '公告ID' })
  @ApiResponse({ status: 200, description: '公告更新成功' })
  @Roles('admin', 'editor')
  async update(
    @Param('id', ParseIntPipe) id: number,
    @Body() updateAnnouncementDto: UpdateAnnouncementDto,
    @CurrentUser() user: any
  ) {
    // TODO: 更新公告
    return {
      code: 200,
      data: null,
      message: '更新成功'
    };
  }

  @Delete(':id')
  @ApiOperation({ summary: '删除公告' })
  @ApiParam({ name: 'id', description: '公告ID' })
  @ApiResponse({ status: 200, description: '公告删除成功' })
  @Roles('admin')
  async remove(@Param('id', ParseIntPipe) id: number) {
    // TODO: 删除公告
    return {
      code: 200,
      data: null,
      message: '删除成功'
    };
  }

  @Post('batch')
  @ApiOperation({ summary: '批量操作公告' })
  @ApiResponse({ status: 200, description: '批量操作成功' })
  @Roles('admin', 'editor')
  async batchAction(@Body() batchActionDto: BatchAnnouncementActionDto) {
    // TODO: 实现批量操作逻辑
    return {
      code: 200,
      data: {
        processed: batchActionDto.announcementIds.length,
        action: batchActionDto.action
      },
      message: '批量操作成功'
    };
  }

  @Put(':id/publish')
  @ApiOperation({ summary: '发布公告' })
  @ApiParam({ name: 'id', description: '公告ID' })
  @ApiResponse({ status: 200, description: '公告发布成功' })
  @Roles('admin', 'editor')
  async publish(@Param('id', ParseIntPipe) id: number) {
    // TODO: 发布公告
    return {
      code: 200,
      data: null,
      message: '发布成功'
    };
  }

  @Put(':id/unpublish')
  @ApiOperation({ summary: '取消发布公告' })
  @ApiParam({ name: 'id', description: '公告ID' })
  @ApiResponse({ status: 200, description: '取消发布成功' })
  @Roles('admin', 'editor')
  async unpublish(@Param('id', ParseIntPipe) id: number) {
    // TODO: 取消发布公告
    return {
      code: 200,
      data: null,
      message: '取消发布成功'
    };
  }

  @Put(':id/top')
  @ApiOperation({ summary: '置顶公告' })
  @ApiParam({ name: 'id', description: '公告ID' })
  @ApiResponse({ status: 200, description: '置顶成功' })
  @Roles('admin', 'editor')
  async setTop(@Param('id', ParseIntPipe) id: number) {
    // TODO: 置顶公告
    return {
      code: 200,
      data: null,
      message: '置顶成功'
    };
  }

  @Delete(':id/top')
  @ApiOperation({ summary: '取消置顶公告' })
  @ApiParam({ name: 'id', description: '公告ID' })
  @ApiResponse({ status: 200, description: '取消置顶成功' })
  @Roles('admin', 'editor')
  async removeTop(@Param('id', ParseIntPipe) id: number) {
    // TODO: 取消置顶公告
    return {
      code: 200,
      data: null,
      message: '取消置顶成功'
    };
  }

  @Get('stats/overview')
  @ApiOperation({ summary: '获取公告统计概览' })
  @ApiResponse({ status: 200, description: '返回公告统计概览' })
  @Roles('admin', 'editor')
  async getStatsOverview() {
    // TODO: 获取公告统计数据
    return {
      code: 200,
      data: {
        totalAnnouncements: 0,
        publishedAnnouncements: 0,
        draftAnnouncements: 0,
        expiredAnnouncements: 0,
        topAnnouncements: 0,
        announcementsByType: {
          系统: 0,
          活动: 0,
          通知: 0
        },
        announcementsByPriority: {
          1: 0, // 低
          2: 0, // 中
          3: 0  // 高
        },
        recentAnnouncements: [],
        popularAnnouncements: []
      },
      message: '获取成功'
    };
  }
}
